Apparatus for forming concrete floors



. A g- 4, 1931-. J. J. MORGAN 1,817,757

APPARATUS FOR FORMING CONCRETE FLOORS v Fild Feb. 11. 1929- sSheets-Sheet 1 r v 27 25 y 2 7 m E 1 A gwomtoc 1 Jofih J. Morgan I 1931-i l-MORGAN 1,817,757

I APPARATUS FOR FORMING CONCRETE FLOORS I Filed Feb. 11, \1929 ssheets-sheet '2 Jab/ .Z Marya/7 Aug. 4, 1931. J. J. MORGAN' I 1,817,757

: APPARATGS FOR FORMING CONCRETE FLOORS Filed Feb. 11.1929 3Sheets-Sheet 3 John J. Morgan 3mm duo-L mg I Patented Aug. 4, 1931 STATEAPPARATUS FOR- FORMINGCONCRETE FLOORS 'JOHN'J. MORGA'NyOF COLUIVIBUS,OHIO Application filed Feoruary 11, 1929. Serial No. 339,039.

This invention relates to apparatus for use inthe forming or laying ofconcrete floors or other beds or layers of monolithic material, such asareemployed in the construction of 5 various types of buildings.

It is a primary object of the present invention to provide improvedmeans for effecting the support and retention of the forms or coreswhich are employed as foundation in members for the concrete during thepouring, forming and hardening of the monolithic substances.

With these and other objects in view, as will appear as the descriptionproceeds, the invention consists in the novel features of construction,combinations of elements and arrangements of parts hereinafter to bemore fully describedand pointed out in the appended claims.

J In the accompanying drawings:

Figure 1 is a plan view of the apparatus comprising the presentinvention,

Figure 2 is a vertical sectional view taken through the apparatus on theplane indicated by the line 2-2 of Figure 1,

Figure 3 is a transverse vertical sectional view taken on the line 3-3of Figure l, v

Figure 4 is a similar view on the plane indicated by the line tl ofFigure 1,

Figure 5 is a detail sectional view on line 5-5 of Figure 4-, p I IFigure 6 is a transverse sectional view taken onthe line 66 of Figure 2,

Figure .7 is a side elevation of the structure disclosed in Figure 6,

Figure 8 is a detail perspective view of the bevelled corner strip,

Figure 9 is a similar view of one of the removable soflit clips,

30 the "theirwarious "dimensions;

Figure 10 is a similar view of aslightly Figure 14 is a perspective Viewof one of the tapered form supports.

Referring more particularly to the drawings, the numeral 1 designates awooden subframe which is mounted upon a lower. floor and is employed toeifect the support of the cores, forms and soliits employed in theerecting of a superposed concrete floor.

support of a pluralityof parallel, longi- The frame 1 is constructed toeffect the tudinally extending and transversely spaced metallic soliits2. In the present instance each of these sofilts is formed from a ratherably formed or bent to produce an upper eavy gauge thickness of sheetmetal, suitorizontally extending wall 3, spaced vertical side walls 4and inwardly bent base anges 5, producing in cross-section a strucandare retained in desired spaced positions by the employment of nails 6 orthe like which are driven through openings provided in the lowerportions of the solfits into the timbers comprising the upper members ofthe frame 1. Soffits of this general construction have been disclosed inmy prior application, Serial No. 300,351, filed August 17, 1928.

Supported between the soflits and extending parallel therewith areinverted U shaped forms or cores 7. The latter include flat orizontalupper'walls 8 andslightly downwardly and outwardly inclined side walls'9'9, said forms or cores being substantially open bottomed. Normally,these forms are disposed in planesabove the sofiits 2 to pro- Lice-thecustomary concrete floor of arched and ribbed construction, the ribs ofthe floor being formed above the sonits 2. while the arches in the floorare produced by the upstanding forms or cores 7.

In order to effect the support of the forms or cores in connection withthe soffits 2, the

walls 4 of said sofiits, contiguous to the upper wall 3 thereof, areformed 'with 'vertical slots 10, produced inthesolfit 'at the time thelatter is manufactured. These slots are 'employedto effect the support161? 1a nanny ofremovablemeta'llie clips ma: um

, ent vertical plane from the legs 12, the upper ends of the webterminating in an outwardly and angularly directed lip 15.

Fr Ln Formed with the clip is an angular prong 16 which includes avertical depending wall 17 arranged to occupy an inwardly off-set planeas regards the plane of the legs 12, the walls 17 being off-setcorresponding approximately to the thickness of the walls 4.

Thus, in Jractice, the clips are positioned at lo-ngi udinally spacedintervals along the lengths of the soflits. This is accomplished byinserting the prongs 16 into the slots and then by forcing the clipsdownwardly the prongs 16 are engaged with the interior surface of thewalls lso as to retain the clips Due securely in connection with thesol'lits.

to the fact that the web lat is off-set from the wall 4, a space isprovided to permit of the insertion and reception of the lower edges ofthe form 7 so that the latter may be supported by the soflits th 'oughthe medium of the clips 11. It will be observed that the prong 16engages with the inner surfaces of the wall l while the legs 12 engagewith the outer surface of the wall. This produces a rigid clip whichretains its position unless deliberately removed. These clips maybeeconomically produced and are capable of being used for successiveoperations.

Following the erection of the sollits 2 and the forms 7 the flooring maybe poured to permit of the formation of the concrete floor. I prefer touse bevelled strips i8 of the type disclosed particularly in Figures 6and 8. These strips include a vertical wall 19 which is inserted betweenthe side wall of the soffit and the inner walls of the forms 7 thestrips then terminate in downwardly and angularly directed lips 20 whicheffectively seal the joints between the lower portions of the forms orcores and the sofiits, whereby when said cores or forms are finallyremoved, following the drying of the floor, a sharp cornered a'ipcaranco is provided which is devoid of the usual ragged edges whichare apt to be present when the strips 18 are omitted.

A clip of the type disclosed in Figure 10 may be employed in lieu ofthat illustrated in Figure 9. The clip disclosed in Figure 10 comprisesa central web 21 which terminates at its opposite ends in reversiblewings 22, one thereof being provided with a flaring end 23. This clipmay be inserted either into the slots 10 of the sofiit which areprovided in the side walls t or into the corresponding slots produced inthe upper wall 3 of the soffit.

In many instances it is desirable to thicken the ribs or verticalcompression elements of the concrete floor, where said elements mergeinto the main girder members produced by the forms 24. This is obtainedby the employment of end forms or cores 25, which mesh or register withthe forms or cores 7. The cores 25, however, taper inwardly from the endthereof which adjoin the cores 7 in order to produce wedge shaped spaces26 between the forms or cores to provide for the widening ribconstruction of the flooring.

In order to effect the support of the forms or cores 25 there is placedon the ends of the solfits 2, adjacent to the girder forms 24,substantially triangular form supports 27 which conform to the shape ofthe spaces 26. The

supports 27 are adapted to receive the clips 11 in order to effect thesupport of the cores 25 in substantially the same manner as the cores 7.The cores 25 correspond generally in construction and function to thecores 7, with the exception that the cores 25 are of taperin form, asillustrated in Figure 1, and also the cores 25 areprovided with closedend walls 28, which are used in forming the girder or rib constructionof the concrete "looring.

The spacing of the end cores 25 from the main girder member-s iseffected by means of the spacers disclosed in Figures 12 and 13especially. These spacers are of metallic construction, being U shapedin cross-section. Thus, each of the spacers comprises a top wall 29 anddepending side walls 30. The side walls 80 may be provided with theslots 10 for the reception of a clip 11 used in engaging the end walls28 of the cores 25. The top walls 29 are extended to produce wings 31 atthe opposite ends of the spacers. These wings overlap the top of thesollits 2, while the vertical end edges of the walls engage with theside walls 4t of th soffits. These spacers may possess desireddimensions for the purpose of adapting the same to cores 25 of differentlengths and tapers and to provide variable widths of the girder members.The soffits 2 are connected with a rail 32 forming a part of the girderformation 24. This arrangement provides for the secure retention of thesoflit-s in operating positions. The soiiits are of any desired lengthand their meeting ends overlap the upright members of the sub-frame 1,as shown in Figure 2. The upright members of the sub-frame may, as shownin Figure 11, be bridged by means of transverse metallic extensions 83.The forms or cores 7 and 25 are preferably formed from smooth sheetmetal, the adjacent ends of the cores being overlapped or nested, asshown in Figure 2, to present an uninterrupted and continuous form.After these forms have been set the concrete in the plastic state III is-r7357 is poured in on top of them, as shown in Figure 3. The shape ofthe form results in imparting the desired cross-sectional formation tothe concrete form or bed and are thus produced. In Figure 3 there hasbeen shown a standard form of flooring employed in the development ofmany concrete buildings. After the flooring has hardened to a certainextent, although'not necessarily completely, the clips 11 may be removedfrom engagement with the soflits. This is accomplished by forciblyturning-the clips in a downward direction, and under normal conditionsthere is sufficient freedom between the form or core 7 and the walls ofthe slots 10 to permit the clips to be removed without mutilation. Theforms or cores 7 may then be dropped and reemployed for producingadditional floors. When the forms 7 are removed the bevel strips 18 areremoved, leaving the lower edges of the concrete rib smooth and wellfinished. This is particularly desirable in buildings where theso-called suspended ceiling is not used and where the ribs constitute aportion of the ceiling of the floor below.

That is claimed is: I

1. In apparatus of the character described, a plurality oflongitudinally extending parallel transversely spacedsoflits, a pluralitof metallic forms of substantially U shaped formation in cross-section,the side walls of said forms terminating immediately adjacent to theside walls of said so-liits, means carried by said soilits for effectingthe support of said forms, and a plurality of corner strips wedgedbetween the adjoining walls of said forms and soliits, said strips beingprovided with inclined portions, which serve to seal the joints betweensaid forms and sofrits.

2. In apparatus of the character described, a sub-frame, a plurality oflongitudinally extending parallel transversely,spaced soliits mountedupon said sub-frame, and a plurality of metallic spacing devicesextending transversely between said soflits. said spacing members beingof U shaped configuration and having the ends thereof provided withextensions arranged to overlap the walls of said soflit, the verticalwalls of said spacers having the ends thereof engaged with the sideadjoining walls of a pair of soffits.

3. In apparatus of the character described, a sub-frame, a plurality oflongitudinally extending parallel transversel spaced soffits mountedupon said sub-frame, a plurality of metallic spacing devices extendingtransversely between said soffits, said spacing mem bers being ofU-shaped configuration and having the ends thereof provided with extensons arranged to overlap the walls of said soflit, the vertical walls ofsaid spacers 'having the ends thereof engaged. with the side walls of apair of soflits, and metallic filler plates overlapping said soilitsadjacent said spacing mem ers, said filler plates having a horizontalatop wallaand verticalconverging side wall's,:the1inner;ends of'saidsidewalls being adj ZL-CBHlZ-itl'lfl sides of said soiiit and theopposite ends: being spaced equi-distant from the side walls of saidsoflit an engagingithe side walls of said spacing: members.

4. In apparatus of the character described, a supporting framework, aplurality of longitudinally extending parallel transversely spacedsoflits mounted upon said framework, and metallic filler plates slidablyreceived on said soffits adjacent said supporting framework, said fillerplates having their top walls adjacent and parallel to the top walls ofsaid soliits and their side walls in converging relation with the sidewalls of said soflits, the inner ends of said side walls being adjacentthe side walls of said soiiits and the outer ends spacedequidistanttherefrom and engaging said supporting framework. 7

5. In apparatus of the character described, a framework, a plurality ofparallel longitudinally extending transversely spaced metallic soiiitssupported horizontally by said framework, a plurality of metallicspacing devices extending transversely between said sofhts and adjacentsaid framework, said spacing members being of substantially U- shapedconfiguration and having the ends thereof provided with extensionsarranged to overlap the Walls of said soflit, the vertical walls of saidspacing devices having the ends thereof engaged with the side adjoiningwalls of a pair of soflits, and metallic filler plates slidably receivedon said soffits adjacent said spacing members, said filler plates beingadjustable longitudinally of said soiiits and having their top wallsextending longitudinally V of and resting upon the top walls of saidsoflits and their vertical downwardly directed side walls in convergingrelationship with he side walls of said soiiits, the inner ends of theside walls of each of said filler plates being adjacent the oppositeside walls of one of said soiiits, the outer ends of said side wallsbeing spaced equi-distant from the side walls of said soflit andengaging said framework.

6. In apparatus of the character described, a framework, a plurality ofparallel longitudinally extending transversely spaced meta-llic soflitssupported horizontally bysaid sitioned between the outer ends of saidfiller plates and the ends of said sofiits, said spacing members beingprovided with a horizontally extending top Wall arranged to overlap saidsoffits.

In testimony whereof I affix my signature.

JOHN J. MORGAN.

